CN2369142Y

CN2369142Y - Oil/gas boiler

Info

Publication number: CN2369142Y
Application number: CN 99223332
Authority: CN
Inventors: 江礼伦
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-01
Filing date: 1999-04-01
Publication date: 2000-03-15
Anticipated expiration: 2009-04-01

Abstract

The utility model relates to a novel wet back type oil/gas boiler. A water jacket chamber is formed between the outer wall of a combustion chamber and the inner wall of a boiler body, the lower part of the combustion chamber is communicated with a smoke return chamber, the lower part of the smoke return chamber is provided with a sealed water back box, a circle of film type water-cooled wall pipes are hermetically communicated between the water back box and the water jacket chamber, fins which are hermetically connected with a side wall are welded and fixed among the film type water-cooled wall pipes, the smoke return chamber is communicated with multiple rows of smoke pipes and the other end of each smoke pipe is connected with an upper smoke box. The utility model is also provided with two rows of smoke pipes, wherein both ends of one row of smoke pipes are respectively communicated with the upper smoke box and a lower smoke box, both ends of the other row of smoke pipes are respectively communicated with the lower smoke box and smoke exhaust pipes and smoke exhaust pipes of each column are arranged in the left water jacket chamber. The utility model has the structural characteristics that the utility model has the advantages of simple structure and easy production of a dry back type boiler, and has the advantages of easy sealing of fire and smoke, little possibility of burning out of the boiler and higher heat efficiency of a wet back type boiler.

Description

Novel wetting back-type oil-burning gas-fired boiler

The utility model relates to a kind of oil-burning gas-fired boiler, particularly a kind of novel wetting back-type oil-burning gas-fired boiler.

In the oil-burning gas-fired boiler of modern pressurized firing, wet-back boiler is most widely used.The design feature of wetting back-type is to have back smoke-box.Returning smoke-box is formed by front tube sheet, back tube sheet and cylindrical shell institute assembly welding.Return the smoke-box wall and all cooled off by the water in the boiler, thus be difficult for being burnt out, and under pressure-fired, inner flame or flue gas are sealed easily, but its structure is comparatively complicated, and manufacturing cost wants high with respect to dry-back boiler.And in manufacture process, the welder will enter back the joint angle weld seam that smoke-box removes to weld tube sheet and smoke pipe end, and condition of work is very abominable.Boiler capacity is more little, and it is more little to go back to the smoke-box space, and when boiler capacity was less than or equal to 1T/H, wet-back boiler returned that the volume of smoke-box is little to be difficult to into the inside to the welder and to operate.Therefore, the smaller hard flour pancake boiler of low capacity can't be designed to wetting back-type.

The purpose of this utility model provide a kind of simple in structure, make and the novel wetting back-type oil-burning gas-fired boiler of heat exchange efficiency height, function admirable easily.

The purpose of this utility model realizes by following structure: the utility model is a kind of novel wetting back-type oil-burning gas-fired boiler, top, combustion chamber and body of heater roof are connected to form the combustor interface, form a water-jacket space between outer wall of combustion chamber and inboard wall of furnace body, the bottom of combustion chamber is communicated with one time smoke-box, the bottom of returning smoke-box is the water back of the body case of a sealing, be communicated with the cold pipe of a circle membrane type water wall between water back of the body case and the water-jacket space, the fin sidewall that is tightly connected is being fixed in welding between the monowall tube, returning smoke-box is communicated with many smoke pipes, the other end of smoke pipe is connected with upper smoke box, other has two smoke exhaust pipes, wherein one row two ends respectively with upper smoke box, lower smoke box is communicated with, another row's two ends respectively with lower smoke box, smoke exhaust pipe is communicated with, and each smoke exhaust pipe all is positioned at the left side water-jacket space.

Design feature of the present utility model is: both kept dry-back boiler advantage simple in structure, easy to manufacture, it is sealed easily to make it to have wet-back boiler fire, cigarette again, and boiler is difficult for the excellent performance that burnt out.The design feature of this boiler is exactly to constitute back smoke-box with membrane wall, water back of the body case.The part of the utility model boiler body is exactly a dry-back boiler.Respectively boring 32 membrane wall pores on the flat head on the following flat head of boiler body, the water back of the body case, these holes are evenly distributed on the circumference of same diameter., membrane wall water screen tube two ends are inserted in the boring after all assembly welding finishes at boiler body and water back of the body case,, at last the membrane wall fin is welded on the water-cooling wall pipe, just constituted brand-new time smoke-box pipe two ends and flat head welding.This wet-back boiler is simple in structure, and is easy to manufacture, and the welder need not enter back the smoke-box operation, has improved workman's working condition.Flue gas flow of the present utility model, working medium flow and general smaller hard flour pancake boiler it makes no odds, so do not describe in detail.Boiler structure of the present utility model can be designed to vertical boiler, also can be designed to horizontal boiler, and steam boiler, hot-water boiler all can adopt this kind type of furnace.Flue gas flow in boiler is three backhauls, also can be designed to four backhauls.Therefore, the thermal efficiency of boiler can be designed as higher, according to the structural principle of the utility model boiler, according to the size of boiler capacity, can develop the series of products of different size.

Fig. 1 is the cutaway view of the utility model structural front view.

Fig. 2 is the A-A cutaway view of Fig. 1.

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment:

The utility model as shown in Figure 1, a kind of novel wetting back-type oil-burning gas-fired boiler, 1 top, combustion chamber and body of heater roof are connected to form the combustor interface, form a water-jacket space 2 between combustion chamber 1 outer wall and inboard wall of furnace body, the bottom of combustion chamber is communicated with one time smoke-box 3, the bottom of returning smoke-box 3 is the water back of the body case 4 of a sealing, be communicated with one between water back of the body case 4 and the water-jacket space 2 and enclosing film-type water-cooling pipe 5, the fin sidewall 6 that is tightly connected is being fixed in welding between the film-type water-cooling pipe 5, returning smoke-box 3 is communicated with many smoke pipes 7, the other end of smoke pipe 7 is connected with upper smoke box 8, two smoke exhaust pipes are arranged, wherein one row two ends respectively with upper smoke box 8, lower smoke box 9 is communicated with, another row's two ends respectively with lower smoke box 9, smoke exhaust pipe 10 is communicated with, and each smoke exhaust pipe all is positioned at left side water-jacket space 2.As shown in Figure 2, described smoke exhaust pipe 7 is arranged for circular arc.All fixing adiabator layer 11 on the bottom of water-jacket space 2 lateral walls, water back of the body case 4, is foreskin 12 outside the adiabator layer 11, is fixing a flame-observing hole that is communicated with the combustion chamber 13 on sidewall of the furnace body.

Claims

1, a kind of novel wetting back-type oil-burning gas-fired boiler, (1) top, combustion chamber and body of heater roof are connected to form the combustor interface, form a water-jacket space (2) between combustion chamber (1) outer wall and inboard wall of furnace body, it is characterized in that: the bottom of combustion chamber is communicated with one time smoke-box (3), the bottom of returning smoke-box (3) is the water back of the body case (4) of a sealing, be communicated with one between water back of the body case (4) and the water-jacket space 2 and enclosing film-type water-cooling pipe (5), the fin sidewall (6) that is tightly connected is being fixed in welding between the film-type water-cooling pipe (5), returning smoke-box (3) is communicated with many smoke pipes (7), the other end of smoke pipe (7) is connected with upper smoke box (8), other has two smoke exhaust pipes, wherein one row two ends respectively with upper smoke box (8), lower smoke box (9) is communicated with, another row's two ends respectively with lower smoke box (9), smoke exhaust pipe (10) is communicated with, and each smoke exhaust pipe all is positioned at left side water-jacket space (2).

2, a kind of novel wetting back-type oil-burning gas-fired boiler according to claim 1 is characterized in that: described smoke exhaust pipe (7) is arranged for circular arc.

3, a kind of novel wetting back-type oil-burning gas-fired boiler according to claim 1, it is characterized in that: all fixing adiabator layer (11) on the bottom of water-jacket space (2) lateral wall, water back of the body case (4), adiabator layer (11) is outer to be foreskin (12), is fixing a flame-observing hole that is communicated with the combustion chamber (13) on sidewall of the furnace body.